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Catalyst-free generation of acyl radicals induced by visible light in water to construct C–N bonds
作者:Maogang Ran、Jiaxin He、Boyu Yan、Wenbo Liu、Yi Li、Yunfen Fu、Chao-Jun Li、Qiuli Yao
DOI:10.1039/d0ob02364g
日期:——
for the direct generation of acyl radicals fromα-diketones, and its selective conversion of nitrosoarenes to hydroxyamides or amides with AcOH or NaCl as an additive. The reaction was carried out under mild conditions in water with purple LEDs as the light source. A broad scope of substrates was demonstrated. Mechanistic experiments indicate that α-diketones cleave to give acyl radicals, with hydroxyamides
Rhodium(III)-catalyzed internal oxidative coupling of N-hydroxyanilides with alkenes via C–H activation
作者:Jing Wen、An Wu、Pei Chen、Jin Zhu
DOI:10.1016/j.tetlet.2015.07.070
日期:2015.9
Described herein is an efficient new method for ortho-olefination of anilides in the presence of AgSbF6 and NaOAc via rhodium(III)-catalyzed internal oxidative C-H bond activation based on hydroxyl as directing and oxidative group. A range of alkenes and functional groups on acetanilides is supported and a possible mechanism is proposed according to the experimental results. (C) 2015 Elsevier Ltd. All rights reserved.
N-arylhydroxamic acids: reaction of nitroso aromatics with .alpha.-oxo acids